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tan^2A
1-cos^2A/1+cos^2A
cos^2A
1+cos^2A/2
sin^2A
1-cos^2A/2
tan(1/2A)
rad 1-cosA/1+cosA
cos(1/2A)
rad 1+cosA/2
sin(1/2A)
rad 1-cosA/2
tan(2A)
2tanA/1-tan^2A
Tan(A-B)
tanA-tanB/1+tanAtanB
tan(A+B)
tanA+tanB/1-tanAtanB
cos(2A)
cos^2A-sin^2A
1-2sin^2A
2cos^2A-1
cos(A-B)
cosAcosB+sinAsinB
cos(A+B)
cosAcosB-sinAsinB
sin(2A)
2sinAcosA
sin(A-B)
sinAcosB-cosAsinB
sin(A+B)
sinAcosA+cosAsinB
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